SECTION 2 / WATER LEAK SOLUTIONS
• Place seal, flat side down, on installation tool.
• Fill groove with silicone grease.
(figure 14)
• Place brass sleeve in
pump head.
• Put installation tool into sleeve and press until seal pops
into place. (figure 15)
• Remove tool and then remove sleeve.
(inset figure 15)
A. Thermal Relief Valve
1. Remove thermal relief valve screw cap. (figure 11)
2. Disassemble thermal relief valve.
(inset figure11)
3. Inspect and replace with new valve if necessary.
B. weep holes - High-Pressure Seals
1. Remove 4 pump head bolts using 6mm allen wrench. (figure 12)
2. Remove pump head.
3. Carefully remove the 3 high-pressure seals. (figure 13)
4. Check seals and pistons for wear and tear and replace if necessary.
See Section 3 / Oil Leaks, D. weep holes for piston replacement.
5. Replace all three seals using installation tool.
11
A. Thermal Relief Valve
B. weep holes – High-Pressure Seals
C. weep holes – Low-Pressure Seals
figure 12
figure 13
figure 14
figure 11
figure 15
Brass Sleeve
Pump 785 9/28/01 3:06 PM Page 11
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For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983
